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VIDEO DOI: https://doi.org/10.48448/e1qp-kn29

technical paper

MMM 2022

November 07, 2022

Minneapolis, United States

Investigation of Ferro and Antiferromagnetic Memory Structures using Scanning NV Magnetometry

To improve magnetic memories, significant efforts are made to reduce the size and spacing of magnetic bits. This implies that failures and defects can only be discovered with a non-invasive technique that can resolve small magnetic fields with high spatial resolution. Scanning NV magnetometry (SNVM) is the emerging quantum sensing technique that offers the required sensitivity.
We will demonstrate magnetic images of a few hot candidate materials for future magnetic memory devices. We will look at memory bits in antiferromagnetic chromia, antiferromagnetic cycloids in BiFeO3 1, cobalt nanomagnets and ultra-scaled CoFeB nanowires 2. We will reveal magnetic textures that are undetectable with standard characterization techniques. In this context, we will more broadly discuss the potential of SNVM as a powerful magnetic characterization tool.


Transcript English (automatic)

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